Nonlinear Optimal Disturbances in Compressible Shear Flows

被引：0
作者：
Huang, Zhu [1 ]
Flint, Tim [1 ]
Hack, M. J. Philipp [1 ]
机构：
[1] Stanford Univ, Ctr Turbulence Res, Stanford, CA 94305 USA
来源：
IUTAM LAMINAR-TURBULENT TRANSITION | 2022年 / 38卷
关键词：
PLANE POISEUILLE; TURBULENCE; STABILITY; GROWTH; TRANSITION; ORR;
D O I：
10.1007/978-3-030-67902-6_6
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
We present a variational method for the computation and analysis of nonlinear optimal perturbations in compressible flows. The method is verified in parallel periodic pipe flow at Re = 1750 and Ma = 0.20. At low initial perturbation energy, the computed perturbations recover the results of linear transient growth analyses. At higher amplitudes, nonlinear effects become relevant, leading to higher energy gains which match the results for incompressible shear flows.
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收藏
页码：87 / 95
页数：9
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